Greetings!
Please check if Active=Saved Mode (ASM) is enabled.
What happens when you try to enable the port using "portEnable" command"?
Pls refer disabling and enabling ports - persistent states Page# 47 https://docs.broadcom.com/docs-and-downloads/dam/fos-810-ficonguide.pdf
If issue persists, please verify if the HBA in the bay#16 blade is installed in the correct slot. You can compare with the other working blades in the same enclosure.
You may also swap a working blade on bay 6 to further isolate.